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(a) The bony surface of a patient with jaw deformity, consisting of a normal "midface" and a deformed "jaw" (in red). (b) The jaw is cut into several segment pieces and moved to form a new normal-looking shape model. (c) The patient's facial bony shape model after treatments.

(a) The bony surface of a patient with jaw deformity, consisting of a normal "midface" and a deformed "jaw" (in red). (b) The jaw is cut into several segment pieces and moved to form a new normal-looking shape model. (c) The patient's facial bony shape model after treatments.

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Fig. 1. (a) The bony surface of a patient with jaw deformity,...
Fig. 2. An overview of our self-supervised deep framework for...
Fig. 3. The architecture of the simulator network, consisting of...
Fig. 4. The architecture of the corrector network with an...
+1 Fig. 5. Corrected bones estimated by the two methods for three randomly...
A Self-Supervised Deep Framework for Reference Bony Shape Estimation in Orthognathic Surgical Planning
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  • Sep 2021
Virtual orthognathic surgical planning involves simulating surgical corrections of jaw deformities on 3D facial bony shape models. Due to the lack of necessary guidance, the planning procedure is highly experience-dependent and the planning results are often suboptimal. A reference facial bony shape model representing normal anatomies can provide a...
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Context 1
... requires a detailed surgical plan to correct jaw deformities. During computer-aided orthognathic surgical planning, a patient's head computed tomography (CT) or cone-beam computed tomography (CBCT) scan is acquired to generate three-dimensional (3D) craniomaxillofacial (CMF) bony shape models [1]. The deformed maxilla and mandible (i.e., "jaw" in Fig. 1(a)) are then osteotomized from the 3D models into multiple bony segments ( Fig. ...
Context 2
... orthognathic surgical planning, a patient's head computed tomography (CT) or cone-beam computed tomography (CBCT) scan is acquired to generate three-dimensional (3D) craniomaxillofacial (CMF) bony shape models [1]. The deformed maxilla and mandible (i.e., "jaw" in Fig. 1(a)) are then osteotomized from the 3D models into multiple bony segments ( Fig. ...
Context 3
... the guidance of 3D cephalometric analysis [2], a surgeon discretely moves each bony segment to a desired position, thus forming a new normal-looking CMF skeletal anatomy. A group of surgical splints are then designed and fabricated to correct the patient's jaw according to the plan during the surgery ( Fig. 1(c)). Cephalometric analysis is based on a group of specific distances and angles calculated from the anatomical landmarks on the 3D models, these measurements provide a limited guidance to the planning process, forming an "ideal" surgical plan that still heavily relies on the surgeon's clinical experience and imagination of what the ...